11443666440 has 32 divisors (see below), whose sum is σ = 34330999680. Its totient is φ = 3051644352.

The previous prime is 11443666439. The next prime is 11443666447. The reversal of 11443666440 is 4466634411.

It is not an unprimeable number, because it can be changed into a prime (11443666447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47681824 + ... + 47682063.

It is an arithmetic number, because the mean of its divisors is an integer number (1072843740).

Almost surely, 2^11443666440 is an apocalyptic number.

11443666440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11443666440 is an abundant number, since it is smaller than the sum of its proper divisors (22887333240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11443666440 is a wasteful number, since it uses less digits than its factorization.

11443666440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95363901 (or 95363897 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 11443666440 in words is "eleven billion, four hundred forty-three million, six hundred sixty-six thousand, four hundred forty".